Hi James et al.
First of all: the key is the work of students, like yourself. It is by no means perfect, and if your answer is different from the key, it is recommended that you go back to the Latin, and see which is wrong, or if both answers could be right (or wrong
). Often, with single sentences without context, different readings are possible.
If you're in doubt, ask your question here.
As to word order: Latin is rather free, and if your answer switches two words around as compared to the key, it's fine. No difference in meaning, perhaps in emphasis,as Andrus points out.
Good luck with your studies,